Art of removing burrs from welded rod lengths



Aug. 15 1939 D. TUBES 2,169,824

ART OF REMOVING BURRS FROM WELDED ROD LENGI'HS.

Filed July 22, 1957 INVENTOR BY Karl 3 711556 ATTORNEY' Patented Aug. 15,1939' 2,159,324

UNITED STATES PATENT OFFICE ART OF REMOVING BURRS FROM WELDED ROD LENGTHS Earl D. Tubbs, New York, N. Y., assignor to Igoe Brothers, 1110., Newark, N. J.

Application July 22, 1937, Serial No. 155,097

1 Claim. (01. 29-148) This invention relates to the art of joint-weldheld flipper 8 as the rod is drawn through the ing metallic rod or wire lengths, performed as a die. g I step in the process of reducing the rod diameter Before the coil 6 is all used its end 9 is to be by a die in a wire drawing system, and my im-- united with the end ID of a reserve coil II that is provement is directed particularly to the prosupported in a frame l2 behind frame I. 5 vision of weld-burr removing means, arranged The frames 1 and I2 are spaced apart and beconveniently between separate rod lengths or tween them is positioned the assemblage or unit coils, in advance of the point where juxtaposed group comprising my burr removing means. rod ends are to be welded together. Thusa standard I 3 is provided which carries Such burr removing means comprises a cutter, a plate I l to which is bolted the frame l5 of a 10 power driven at such high speed that an-opermotor l6. Also carried by plate I 4, at its other ative, holding the welded rods, may bring the side, is a. bearing member I! in which is jourburr against the cutter to cause itsv removal. nalled a shaft l8 that carries, at one end, a pulley In this art ofwire drawing much time is lost l9, and at its other end a cutter which is gen- 5 under the present practice of reducing the dierally indicated by the reference character A. ameter of each succeeding length of rod, at an Pulley l9 connects with a pulley on the moend portion thereof, in order to thread it through tor shaft 2| as by a belt 22, and because pulley the die, and in the threading operation; where- I9 is of much smaller diameter than pulley 20 as, with welded together rod lengths the drawing it will be perceived that'shaft l8 with cutter A 20 operation may be continuous, because the welding can be rotated at y h gh Speed. In practice I 20 and burr removing operations can be performed find it desirable to accord shaft l8 a speed of for uniting succeeding rod lengths while the rod 3,600 Th e so for emp y this of one coil is being drawn. high speed of rotation will appear hereinafter.

Other features and advantages of my invention In the-unit group referred to the cutter A is will hereinafter appear. shown as provided with two, adjacent, circular 25 I th drawing: rows of concave cutting teeth, indicated respec- Figure 1 is a diagrammatic view of a wire drawlively at the c t f p Pe ing system embodying the features of my invenemployed to remove e b m the 10 tion, these features including a standard on Weld, n the cutter for example, being which are mounted a motor and a burr removing pleyed t0 finish the cut surface. 30 cutter, with means for driving said cutter from Extended from 213156 m is a guide h id motor t high speed having the depressions 26, 21 respectively in line Fi 2 i a top plan i enlarged 0f t burr with the concave teeth above and below the cutremoving assemblage, ter axis, said depressions serving as guide rests Fig. 3 is'a side elevation of Fig, 2, for the rod that is being passed over and under 35 Fi 4 i a, from; i of Fi 2, the cutter in the burr removing operations. For,

1 s 1 m1 vi h in practice, when the rod ends, having been 011523. 15 a partla' slde ecto e welded, forming the burr 28, an operative will Fig. 6 is a front sectional view of the cutter, grasp the rod with both hands ne,at each siae 40 showing a partially removed weld thereon at the of the cutter drawmg the rod in the direction 40 f the arrow Fig. 3, so that the cutter teeth, at top, and the weld about to be applied to the cut- 0 ter at the-bottom, for Complete removal. the high R. P. M. rate indicated, will cut off that ortion of the burr engaged by the cutter, where- I Flgs' 9 and. 10 respectively h the Welded :s, at a relatively slow R. P. M. rate the shock of rod with the fun u the burmpa'rtly cutter impact against the burr would tear the 45 moved (8),, the burr fully removed (9), and the rod out of the ()peratives grasp I rod countersunk at its weld m Fig. 8 the rod is shown with the burr of In the wire drawing system illustrated let I Fig partially removed, the rod h i been indicate a support that carries a revoluble replaced fi t. in the top of the tt r see ceiving drum 2 for reduced wiref3 that has been Figs 5 and d in Fig, 9 the remainder of the drawn through a die {i from the thicker wire or burr has b moved by placing the rod in the red bottom part of the cutter, see the bottom part The rod 5 is shown as emanating from a coil of Fig. 6. 6 which is supported in a frame I, successive Were the rod to be left with its weld-Joint members of. the 'coil being released by a spring flush with the normal diameter of the rod, as 55 I claim:

The new art of joint-welding metallic rod for continuous diameter reduction which'consists in welding juxtaposed rod length ends, thereby crew ating a circumferential burr, applying said burr to a. cutter rotating at high speed for its removal,

and. continuing the cutting operation to further reduce the jointed rod portion below its normal diameter.

EARL D. TUBES. 

